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<h1>Collidable objects</h1>


<p>Collidable objects are <a href="objects.htm">objects</a> that can be tested for <a href="collisionDetection.htm">collision</a> against other collidable objects, i.e. that will register a collision state. This does not mean that they will respond to collision (i.e. <a href="designingDynamicSimulations.htm#staticAndRespondable">respondable</a>), which is something different. Collidable objects include:</p>

<li><a href="dummies.htm">Dummies</a></li>
<li><a href="shapes.htm">Shapes</a></li>
<li><a href="octrees.htm">OC trees</a></li>
<li><a href="pointClouds.htm">Point clouds</a></li>

<p>Dummies and point clouds, since point-based, can only collide against OC trees (which are volume-based).</p>

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<a href="collections.htm">Collections</a> are also collidable, since they might contain collidable objects. </p>
<p>Collidable objects can have their <em>collidable property</em> individually enabled or disabled (enabled by default for non-pure shapes, OC trees and point clouds). This can be set in the <a href="commonPropertiesDialog.htm">object common properties</a> or through the <a href="regularApi/simSetObjectSpecialProperty.htm">sim.setObjectSpecialProperty</a> <a href="apiOverview.htm">API</a> function.<br>
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<p>Additionally, collidable objects can have their <em>collidable property</em> overridden depending on their related <em>model properties</em> (if they are part of a <a href="models.htm">model</a>). Refer to the <a href="modelDialog.htm">model  dialog</a> for more information.<br>
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<h3 class=recommendedTopics>Recommended topics</h3>

<li><a href="apiFunctionListCategory.htm#collisionObject">Related API functions</a></li>
<li><a href="collisionDetection.htm">Collision detection</a></li>
<li><a href="dummies.htm">Dummies</a></li>
<li><a href="shapes.htm">Shapes</a></li>
<li><a href="octrees.htm">OC trees</a></li>
<li><a href="pointClouds.htm">Point clouds</a></li>
<li><a href="commonPropertiesDialog.htm">Object common properties</a></li>
<li><a href="modelDialog.htm">Model dialog</a></li>

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